UTH's are intended for glass and it says so in the instructions. As for the acrylic, in a few months, perhaps a year, you'll likely hate it and toss it. Even with the most gentle cleaning, you'll be looking at your snakes through a "fog" in no time. Go to any pet store and you'll see that most don't carry much in the way of acrylic aquariums, and for good reason. They aren't very popular, for all the reasons already mentioned.